Police were quick to point out that no connection has been made between the remnants of bottle bombs found in a campus parking lot and the explosives used in the Boston Marathon attacks.

Two campus-wide alerts were issued at Keene State College in the past week as a result of the remnants being found on different days. Police said similar homemade chemical bombs were also found in March, but no arrests have been made.

"It was right in the parking lot," said student Brett Lyskawa. "It was just remnants of exploded plastic, that's what it is."

"It was just like a two-liter bottle, metal, plastic everywhere," said student Christian Ameden. "I wasn't positive it was, but that's what I thought it was."

Keene officials sent out alerts warning those on campus to stay away from any possible bottle bombs, whether they were exploded or not.

Similar chemical reaction bombs, or CRBS as police call them, were found in March at Keene State. They are made from common household chemicals, and police said reports of the explosives go up as the weather gets warmer.

Police said everyone is on high alert after the Boston bombings.

"Sure, there's a heightened sense, and people are more sensitive based on the events of the region," said Lt. Steve Stewart of the Keene Police Department.

Police and college officials urge everyone to adopt a "don't touch, but tell police" policy when it comes to explosives. They said it is best to stay away from anything that looks questionable and to call 911.

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